Switch for electric traction systems.



Patented Dec. l2, I899.

U. ZOEDICKE. SWITCH FOR ELECTRIC TRACTION SYSTEMS.

(Application filed Aug. 28, 1899.)

(No Model.)

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OTTO ZOEDIOKE, OF MIlHLI-IAUSEN, GERMANY.

SWITCH FOR ELECTRIC TRACTION SYSTEMS.

SPECIFICATION forming part of Letters Patent No. 639,127, dated December12, 1899. Application filed August 28, 1899- Serlal No-72 ,780 (N0111013610 T0 on whom it may concern:

Be it known that I, Orro ZOEDIOKE, merchant, a subject of the King ofPrussia, Eniperor of Germany, residing at Miihlhausen, (Thuringia,) inthe Kingdom of Prussia and German Empire, have invented certain new anduseful Improvements in Switches for Electric Traction Systems, of whichthe following is a specification.

This invention relates to well known switches designed for electricrailways; and it has for its object to provide novel, simple, andefficient means for preventing the current-collecting roller or trolleyjumping the switch. This object is accomplished in the manner and by themechanism hereinafter described and claimed, reference being made to theaccompanying drawings, in which- Figure 1 is a detail plan View ofsufficient of the switch to enable my invention to be understood, andFig. 2 is a detail vertical sectional view showing parts hereinafterexplained.

In order to enable those skilled in the art to make and use myinvention, I will now describe the same in detail, referring to thedrawings, wherein- The letters 0 d indicate two spring switchtongues,and x the overhead current-collecting roller or trolley, the pivotalpoints of the tongues being located opposite each other,and the tonguesbeing arranged to be automatically operated by the current-collectingroller or trolley. When this roller or trolleytravels from one fixedcontact, as at a, to another, as at a, the tongue 0, its spring beingovercome, is pressed against the tongue cl and the roller passes, thetongue 0 resuming its normal position after the passing of thecurrent-collecting roller. When, on the otherhand, the currentcollectingroller a: runs from b to a, the tongue d, the tension of its springbeing overcome, is pressed outward in the direction of the arrow I andreturns after the passing of the current-collecting roller to theposition shown in Fig. 1. During the passing of the currentcollectingroller over such switch -tongues the difficulty very easily arises thatin consequence of the resistance of the tongues, acting under theinfluence of a spring against the movement of the current-collectingroller x, the said roller jumps off the switch-tonguesi. 6., off theswitch itself. In order to overcome this objection, guide-plates it" areprovided on each side of the switch-tongues viz., plate 7 for theswitch-tongue c and plate 2" for the switch-tongue d-these plates havingprojecting edges turned inwardly. The projecting edge of eachguiding-plate holds and catches the studs y of axle projecting on eachside of the current-collecting roller w while the current-collectingroller is passing over the switch-tongues-i. e. the air-switch.

This switch can also be adapted for use on cable roads.

Having now particularly described and ascertained the nature of thisinvention and in What manner the same is to be performed, I declare thatwhat I claim is- A switch for electric traction systems with three fixedconductors such as Ct a, 12 com prising intermediate s prin g-controlledswitchtongues such as c and d with oppositely-arranged pivotal points incombination with guide-plates having inwardly-turned edges adapted toengage with the axle or studs on the current-collecting roller when thelatter passes in order to prevent the jumping off of the roller from thetongues at the switchingpoints substantially as described.

Intestimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

OTTO ZOEDIOKE.

Witnesses:

WILHELM KLEYENSTEUBER, FRIEDRICH LOEGENBRUOH.

